Pet fountain



FIG. 1 is a top, front and right side isometric view of a pet fountain showing our new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is bottom plan view thereof.

The broken lines in FIGS. 1-7 depict unclaimed portions of the pet fountain and form no part of the claimed design. 

CLAIM The ornamental design for a pet fountain, as shown and described. 